Patents Examined by Richard D. Lovering
  • Patent number: 6552163
    Abstract: A poly(ethylene oxide) polymer having low and high molecular weight fractions is fractionated by dissolving the polymer in a solvent for the low molecular weight fraction. A good separation of the low and high molecular weight fractions can be obtained. When the poly(ethylene oxide) polymer contains a metal cyanide catalyst, this process also provides a good separation of the catalyst from the low molecular weight fraction. In this instance, the catalyst remains active and the high molecular weight fraction containing the catalyst can be recycled into subsequent polymerization processes.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: April 22, 2003
    Assignee: The Dow Chemical Company
    Inventors: Katherine S. Clement, Louis L. Walker
  • Patent number: 6550750
    Abstract: An apparatus for making a long lasting foam. The apparatus includes an injection chamber, an expansion chamber and a coiled hose which extends therebetween. The coiled hose includes a plurality of turns. A pressure generating pump is provided to force a stream of a foam solution into the injection chamber where it is mixed with a pressurized stream of air and passed through the injection chamber, through the coiled hose, and through the expansion chamber in order to yield a foam having desirable stability and expansion characteristics.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: April 22, 2003
    Inventors: David Kalkstein, John Edward Balkiewicz
  • Patent number: 6547987
    Abstract: The present invention relates to a solvent for use in extracting oil from an oil bearing material, such as soybeans, with the solvent resulting in the selective extraction of a triglyceride rich oil, which contains 95% or greater triglycerides and non-polar constituents, with the solvent comprised of a hydrocarbon, preferably hexane, and a fluorocarbon, so that the solvent has a viscosity less than 2.6 centipoise and a polarity of less than 0.1. The present invention also relates to a method of using the solvent to extract the triglyceride rich oil, with the method including preferably extracting the oil at a temperature ranging between 35° C. and 55° C., and then preferably cooling resulting miscella to a temperature ranging between 15° C. and 25° C.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: April 15, 2003
    Assignee: University of Missouri Board of Curators
    Inventors: Shubhen Kapila, Paul K. S. Nam, Virgil J. Flanigan
  • Patent number: 6548558
    Abstract: Methods for controlling wax and other contaminants by improving the dispersion of these materials through the addition of contaminant dispersants to the process of recycling paper and paperboard are disclosed. A preferred contaminant dispersant comprises: a) water; b) a plasticizer; c) an anionic dispersant; d) a surfactant wetting agent; and e) either 1) an acid or lecithin and optionally, a base, or 2) a preneutralized component.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: April 15, 2003
    Assignee: Ondeo Nalco Company
    Inventors: Steven J. Severtson, Martin J. Coffey
  • Patent number: 6540923
    Abstract: An oxygen scavenger, containing a heterocyclic compound having a N-substituted amino group as an effective component, can adequately exhibit the oxygen scavenging effect in not only feed water lines for high temperature water, a boiler, and steam and condensate return lines, but also feed water lines for low temperature water. The oxygen scavenger contains: a heterocyclic compound having a N-substituted amino group or a salt thereof; a hydroxybenzene derivative and/or a naphthoquinone derivative; and neutral amine.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: April 1, 2003
    Assignee: Kurita Water Industries Ltd.
    Inventors: Masakazu Koizumi, Yukimasa Shimura, Shiro Taya, Takatoshi Sato
  • Patent number: 6540822
    Abstract: A method of emulsifying asphalt using a polyamine polybetaine, preferably a dibetaine, as an emulsifier or co-emulsifier and an emulsion of asphalt, water and a polybetaine, preferably a diamine dibetaine. The advantages of using a polyamine polybetaine as an emulsifier or co-emulsifier include its ability to provide superior cationic and anionic emulsions, and slow-setting emulsions at low use levels, and the excellent adhesion of the cured asphalt film.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: April 1, 2003
    Assignee: Akzo Nobel N.V.
    Inventors: Julia Mary Wates, Alan James
  • Patent number: 6537464
    Abstract: A method of making poly aluminum chloride water treatment products comprising reacting an aluminum compound with a base at a temperature in the range of about 70 to 250° F., measuring the aluminum oxide content and adding water to the reaction product as needed to prepare a product having an aluminum oxide content of about 10 percent by weight of the solution.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: March 25, 2003
    Assignee: General Chemical Corporation
    Inventors: Benjamin Shultes, III, Karen Elizabeth Ruehl, Teresa Antoinette Kristoff, Nicole Marie Gasiorowski
  • Patent number: 6538040
    Abstract: A piston pump has a piston and cylinder, the piston being adapted to reciprocally move within the cylinder to effect a suction stroke and discharge stroke. A gas is supplied into the cylinder during and/or after the suction stroke of the piston pump, and a high-viscosity material is supplied into the cylinder after the suction stroke. A discharge stroke of the piston pump is effected after completion of supply of the high-viscosity material in the cylinder to thereby discharge the gas and high-viscosity material into a pipe. A first step introduces a high-viscosity material into a gas, a second step pressurizes, by a pump, a combination of the high-viscosity material and the gas transferred from the first step, a third step passes the combination in a pressurized state through a dispersing pipe to disperse the gas into the high-viscosity material to produce a mixture, and a fourth step discharges the mixture to effect foaming.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: March 25, 2003
    Assignees: Sunstar Giken Kabushiki Kaisha, Uni-Sunstar B.V.
    Inventors: Shinji Okuda, Masaharu Takada, Yasuyuki Yoshimoto
  • Patent number: 6538041
    Abstract: An apparatus and a method for forming stabilized atomized microemulsions from different liquids which are normally immiscible; the apparatus according to the invention comprises a primary chamber and a sequence of at least two cavitation chambers arranged in succession, means for feeding primary and secondary fluids into the primary chamber, and means for the exit of the formed microemulsion from the last cavitation chamber, the primary chamber and the cavitation chambers being fluid-connected to each other by way of fluid passage means which are adapted to produce a velocity of the fluids, during passage through the passage means, which gradually increases from the primary chamber toward the last cavitation chamber.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: March 25, 2003
    Inventor: Ernesto Marelli
  • Patent number: 6534484
    Abstract: Plasmid-lipid particles which are useful for transfection of cells in vitro or in vivo are described. The particles can be formed using either detergent dialysis methods or methods which utilize organic solvents. The particles are typically 65-85 nm, fully encapsulate the plasmid and are serum-stable.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: March 18, 2003
    Assignee: Inex Pharmaceuticals Corp.
    Inventors: Jeffery J. Wheeler, Michael Hope, Pieter R. Cullis, Marcel B. Bally
  • Patent number: 6534220
    Abstract: Novel carbonate compounds and novel carbamate compounds comprise at least one carbonate or carbamate moiety that is directly bonded only to groups selected from the group consisting of alkyl groups, cycloalkyl groups, alkenyl groups, cycloalkenyl groups, alkynyl groups, cycloalkynyl groups, and combinations thereof, the groups optionally containing one or more catenary heteroatoms. At least one of the directly-bonded groups comprises at least one sulfonyl moiety. The compounds are useful as solvents for the electrolyte salts used in electrochemical devices.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: March 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: James E. Garbe
  • Patent number: 6531513
    Abstract: Carbon nanotubes are dissolved in organic solutions by attaching an aliphatic carbon chain (which may contain aromatic residues) so as to render the carbon nanotubes soluble.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: March 11, 2003
    Assignee: University of Kentucky Research Foundation
    Inventors: Robert C. Haddon, Mark A. Hamon
  • Patent number: 6531304
    Abstract: The present invention relates to a process for modifying the dispersing properties of organometallic-prestabilized or organometallic-pretreated nanometal colloids by reacting reactive metal-carbon bonds in the protective shell to prepare nanometal colloids having a wide range of solubilities in hydrophilic and hydrophobic media including water, to the colloids thus prepared and their use.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: March 11, 2003
    Assignee: Studiengesellschaft Kohle mbH
    Inventors: Helmut Bönnemann, Werner Brijoux, Rainer Brinkmann
  • Patent number: 6531514
    Abstract: A dispersant slurry for making spandex, based on phosphated block poly(alkylsiloxane)-poly(alkyleneether) alcohol or aromatic- or alkylaromatic-terminated phosphated poly(alkyleneether) alcohol dispersants, is provided.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: March 11, 2003
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Thomas Edward Carney, Oliver Gutsche, Kai-Volker Schubert
  • Patent number: 6527975
    Abstract: A process for making a mineral oxide concentrate useful as a flocculent, coagulant and/or disinfectant for the treatment of water and wastewater comprises extracting minerals from a natural mineral deposit rich in aluminum, magnesium, potassium and iron; reducing the particle size of the extracted material to a fine particle size, followed by heat treating the resulting mineral-rich material in air to produce a controlled expansion of the material and to oxidize essentially all organic constituents and to evaporate all water, leaving a mass of expanded dried mineral oxide-rich material containing oxides of aluminum, magnesium, potassium and iron. The expanded oxide-rich material is dissolved in a liquid carrier, preferably an alkaline solution, but an acidic solution also can be used, to produce a concentrate in which the mineral oxides are available and useful for said water and wastewater treatment.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: March 4, 2003
    Assignee: Minox Corporation USA
    Inventors: Ilangovan Kuppusamy, Ranjani Krishnan Ilangovan
  • Patent number: 6524372
    Abstract: A novel compound which can be used in the field of separation and purification of gases is disclosed. The compound can be incorporated into a silica gel incorporating polyazacycloalkane structural units for separating a predetermined gas from a mixture of gases. The mixture of gases is brought into contact with a metallated hybrid gel under conditions which make possible the absorption of the gas to be separated, followed by a phase of desorption of the attached gas, and the recovery of the gas.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: February 25, 2003
    Assignee: L′Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l′Etude et l′Exploitation des Procedes Georges Claude
    Inventors: Robert Corriu, Catherine Reye, Ahmad Mehdi, Gérard Dubois, Claude Chuit, Franck Denat, Bruno Roux-Fouillet, Roger Guilard, Gilles Lagrange, Stéphane Brandes
  • Patent number: 6524396
    Abstract: A process for metal cutting using a water-mixed cutting compound and subsequent cleansing and corrosion protective treatment wherein an oil in water emulsion is used as a cutting compound which contains; (I) an amount emulsifier system consisting of: (a) ethyoxylates/propoxylates of fatty alcohols having 8 to 18 carbon atoms in the alcohol, which contains 2 to 6 ethylene oxide units and 4 to 8 propylene oxide units; (b) fatty alcohols and/or fatty alcohols propoxylates having 12 to 24 carbon atoms in the alcohol and 0 to 3 propylene oxide units and/or distillation residues of such fatty alcohols; In a ratio by weight, a:b=1:0.2 to 0.2:1; and (ii) corrosion inhibitory; and an aqueous solution or suspension is used for cleansing an anti-corrosion treatment which contains the same emulsifier system and the corrosion inhibitors as the cutting compound.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: February 25, 2003
    Assignee: Henkel Kommanditgesellschaft aut Aktien
    Inventors: Juergen Geke, Hans-Peter Oelscher, Anders Johansson
  • Patent number: 6521671
    Abstract: A micelle dispersion containing hydrophobic particles, conductive particles and a surfactant of a ferrocene derivative dispersed in an aqueous medium. The surfactant of a ferrocene derivative in an equilibrium concentration contains an oxidized compound in a concentration of 40 &mgr;g/ml or less and a reduced compound in a concentration of 50 to 300 &mgr;g/ml. A process for producing a micelle dispersion including dispersing hydrophobic particles, conductive particles and a surfactant of a ferrocene derivative in an aqueous medium, where an oxidized compound in the surfactant of a ferrocene derivative is removed with at least one of an ion exchange resin and a reducing agent. A color filter can be produced in excellent yield without color overlapping by using the micelle dispersion and the process provides the micelle dispersion.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: February 18, 2003
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Motoharu Ishikawa, Hideaki Kurata
  • Patent number: 6518227
    Abstract: An oil-based solvent composition for denture adhesive, suitable for use in the oral cavity, containing Melaleuca Alternifolia oil in an oil-based carrier, such as a vegetable oil. Additional solvents such as orange oil and flavorings may be added to the composition.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: February 11, 2003
    Inventor: Robert Woosley
  • Patent number: 6516537
    Abstract: In a process for drying microporous, fluid-containing particles, the fluid-containing particles to be dried are fed as a moving bed countercurrently to a drying fluid, the interfacial tension of the fluid being reduced in comparison with the interfacial tension of the fluid at room temperature, at near-critical to supercritical pressure of the fluid, preferably to a value in the range from 0 to {fraction (1/10)}, in particular from 0 to {fraction (1/20)}, of the interfacial tension at room temperature. Furthermore, microporous, three-dimensionally networked particles are prepared by a process comprising preparation of microporous particles containing pore liquid, exchange of the pore liquid in the particles for a fluid and drying of the fluid-containing particles, the exchange and drying being carried out in the moving bed by the countercurrent method.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: February 11, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Friedhelm Teich, Heiner Schelling, Herbert Köster, Horst Kratzer, Wolfgang Reichert, Martin Gall, Bernd Ziegler